Home / 2,847.80-3,928.86-2,103.52

Finding the Fourth Proportional to 2,847.80, 3,928.86 and 2,103.52

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Solution

The fourth proportional to 2,847.80, 3,928.86 and 2,103.52 is: 2,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.80 : 3,928.86 = 2,103.52 : x
  2. Step 2: Convert to fraction form
    2,847.80/3,928.86 = 2,103.52/x
  3. Step 3: Cross multiply
    2,847.80x = 3,928.86 × 2,103.52
  4. Step 4: Simplify right side
    2,847.80x = 8,264,435.59
  5. Step 5: Solve for x
    x = 8,264,435.59/2,847.80
  6. Step 6: Final answer
    x = 2,902.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.